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| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2011-10-04 11:09:52 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-10-04 12:03:50 +0100 |
| commit | b1b6cffeb71d363693d15444c79d828153a70865 (patch) | |
| tree | 80538b1cfb600ade066db8dd313612f419b7dbb6 | |
| parent | 9cd113261b7d38b96e6edac688790bb965e23566 (diff) | |
| download | linux-b1b6cffeb71d363693d15444c79d828153a70865.tar.gz linux-b1b6cffeb71d363693d15444c79d828153a70865.tar.bz2 linux-b1b6cffeb71d363693d15444c79d828153a70865.zip | |
ASoC: omap-pcm: Fix the no period wakeup implementation
After omap_request_dma the BLOCK_IRQ is enabled as default
configuration for the channel.
If we are requested for no period wakeup, we need to disable
the BLOCK_IRQ in order to not receive any interrupts.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | sound/soc/omap/omap-pcm.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c index 9b5c88ac35b9..5e37ec915de2 100644 --- a/sound/soc/omap/omap-pcm.c +++ b/sound/soc/omap/omap-pcm.c @@ -198,6 +198,14 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream) OMAP_DMA_LAST_IRQ | OMAP_DMA_BLOCK_IRQ); else if (!substream->runtime->no_period_wakeup) omap_enable_dma_irq(prtd->dma_ch, OMAP_DMA_FRAME_IRQ); + else { + /* + * No period wakeup: + * we need to disable BLOCK_IRQ, which is enabled by the omap + * dma core at request dma time. + */ + omap_disable_dma_irq(prtd->dma_ch, OMAP_DMA_BLOCK_IRQ); + } if (!(cpu_class_is_omap1())) { omap_set_dma_src_burst_mode(prtd->dma_ch, |